Adjective
convectional (not comparable)
Of, pertaining to, or employing convection; convective.
Other Definitions The Rayleigh number can be also used as a criterion to predict convectional instabilities, such as A-segregates, in the mushy zone of a solidifying alloy. Source: Internet
This critical value is independent of the composition of the alloy, and this is the main advantage of the Rayleigh number criterion over other criteria for prediction of convectional instabilities, such as Suzuki criterion. Source: Internet